Home / 20,161.91-27,822.96-11,209.39

Finding the Fourth Proportional to 20,161.91, 27,822.96 and 11,209.39

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Solution

The fourth proportional to 20,161.91, 27,822.96 and 11,209.39 is: 15,468.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.91 : 27,822.96 = 11,209.39 : x
  2. Step 2: Convert to fraction form
    20,161.91/27,822.96 = 11,209.39/x
  3. Step 3: Cross multiply
    20,161.91x = 27,822.96 × 11,209.39
  4. Step 4: Simplify right side
    20,161.91x = 311,878,340.04
  5. Step 5: Solve for x
    x = 311,878,340.04/20,161.91
  6. Step 6: Final answer
    x = 15,468.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.